Mod Note: Posts #1 - #4 originally in this thread.
regardless of power supply you should not use a lift in case of fire, this is because the shaft can act as a chimneyThe usual NR lifts are not suitable for use in evacuation situations because they have only one power supply so could very easily be incapacitated. Lifts suitable for use in emergency situations have dual power supplies and have greater design involvement to ensure reliability of supply.
The usual advice is to go to the extreme end of a platform where you are less likely to be affected by smoke - which kills a lot more people than fire - because it is normally better ventilated. There are, of course, exceptions to this but it is a general rule.